what you are buying is a "basic" stereo. IMO i would just use the factory wiring for the equipment that you are buying. Keep in mind to do it properly to get wire through the doors you either need to do a new boot or go through the molex plugs (pain in the a$$).

i have ran lots more power than that in my own cars and never re-wired the speakers.

alrighty, i'm learning a lot,,, so I'll use the stock wiring in the doors, the back ones are easy to re-wire cause the amp will be right next to them and I will use heavier gauge wire to what is added for the fronts.

There is no need to waste your money on a heavy gauge speaker wire to go from the amp to the factory front wires. Just match the gauge. Your basically creating a "choke" point since you will be stepping down the wire.

still reading, starting to understand this better, I dont understand why the rca adapters are needed? I guess so you can attach some longer cables to reach the amp? But again, isn't the amp not designed for this??

I think that these guys are sending too strong signals to their amps and that's why they have to turn their amps gains all the way down,, I dont think this is the correct way to do this..... not sure I want to go this way if it's not right,,,,, thinking of just using the PAC as it was designed to be used.. and turning up the gain dials up higher if needed.